-86.06% is the change from 502 to 70
Calculation steps:
[( 70 - 502 ) ÷ 502] x 100 = -86.06%
Formula
Percentage change = [(70 - 502) / 502] x 100
Subtract the new number by the original number
70 - 502 = -432
-432 ÷ 502 = -0.8605577689243028
-0.8605577689243028 x 100 = -86.06%