-88.52% is the change from 610 to 70
Calculation steps:
[( 70 - 610 ) ÷ 610] x 100 = -88.52%
Formula
Percentage change = [(70 - 610) / 610] x 100
Subtract the new number by the original number
70 - 610 = -540
-540 ÷ 610 = -0.8852459016393442
-0.8852459016393442 x 100 = -88.52%