diff --git a/mathgenerator/funcs/basic_math/__init__.py b/mathgenerator/funcs/basic_math/__init__.py
index 8e1a708..092f7bb 100644
--- a/mathgenerator/funcs/basic_math/__init__.py
+++ b/mathgenerator/funcs/basic_math/__init__.py
@@ -13,6 +13,7 @@ from .fraction_multiplication import *
 from .is_prime import *
 from .multiplication import *
 from .percentage import *
+from .percentage_error import *
 from .power_of_powers import *
 from .square import *
 from .square_root import *
diff --git a/mathgenerator/funcs/basic_math/percentage_error.py b/mathgenerator/funcs/basic_math/percentage_error.py
new file mode 100644
index 0000000..41c0b20
--- /dev/null
+++ b/mathgenerator/funcs/basic_math/percentage_error.py
@@ -0,0 +1,28 @@
+from .__init__ import *
+
+
+def gen_func(maxValue=100, minValue=-100, format='string'):
+    observed_value = random.randint(minValue, maxValue)
+    exact_value = random.randint(minValue, maxValue)
+    
+    if observed_value * exact_value < 0:
+        observed_value *= -1
+        
+    error = (abs(observed_value - exact_value) / abs(exact_value)) * 100
+    error = round(error, 2)
+
+    if format == 'string':
+        problem = f"Find the percentage error when observed value equals {observed_value} and exact value equals {exact_value}."
+        solution = str(error) + "%"
+        return problem, solution
+
+    elif format == 'latex':
+        return 'Latex unavailable'
+
+    else:
+        return observed_value, exact_value, error
+
+
+percentage_error = Generator(
+             "Percentage error", <id>, gen_func,
+             ["maxValue=100", "minValue=-100"])