Added a percentage alogrithm

Author: Marlonnnz

maths/percentage_calculator.py

@@ -0,0 +1,10 @@
+def calculate_percentage(value, percent):
+    return (value * percent) / 100
+
+
+value = float(input("Enter value: "))
+percent = float(input("Enter percentage: "))
+
+result = calculate_percentage(value, percent)
+
+print("Result:", result)