-86.62% is the change from 523 to 70
Calculation steps:
[( 70 - 523 ) ÷ 523] x 100 = -86.62%
Formula
Percentage change = [(70 - 523) / 523] x 100
Subtract the new number by the original number
70 - 523 = -453
-453 ÷ 523 = -0.8661567877629063
-0.8661567877629063 x 100 = -86.62%
Example