-86.42% is the change from 523 to 71
Calculation steps:
[( 71 - 523 ) ÷ 523] x 100 = -86.42%
Formula
Percentage change = [(71 - 523) / 523] x 100
Subtract the new number by the original number
71 - 523 = -452
-452 ÷ 523 = -0.864244741873805
-0.864244741873805 x 100 = -86.42%