-86.35% is the change from 513 to 70
Calculation steps:
[( 70 - 513 ) ÷ 513] x 100 = -86.35%
Formula
Percentage change = [(70 - 513) / 513] x 100
Subtract the new number by the original number
70 - 513 = -443
-443 ÷ 513 = -0.8635477582846004
-0.8635477582846004 x 100 = -86.35%