-86.69% is the change from 526 to 70
Calculation steps:
[( 70 - 526 ) ÷ 526] x 100 = -86.69%
Formula
Percentage change = [(70 - 526) / 526] x 100
Subtract the new number by the original number
70 - 526 = -456
-456 ÷ 526 = -0.8669201520912547
-0.8669201520912547 x 100 = -86.69%