-85.77% is the change from 506 to 72
Calculation steps:
[( 72 - 506 ) ÷ 506] x 100 = -85.77%
Formula
Percentage change = [(72 - 506) / 506] x 100
Subtract the new number by the original number
72 - 506 = -434
-434 ÷ 506 = -0.857707509881423
-0.857707509881423 x 100 = -85.77%