-86.46% is the change from 613 to 83
Calculation steps:
[( 83 - 613 ) ÷ 613] x 100 = -86.46%
Formula
Percentage change = [(83 - 613) / 613] x 100
Subtract the new number by the original number
83 - 613 = -530
-530 ÷ 613 = -0.8646003262642741
-0.8646003262642741 x 100 = -86.46%