-83.27% is the change from 514 to 86
Calculation steps:
[( 86 - 514 ) ÷ 514] x 100 = -83.27%
Formula
Percentage change = [(86 - 514) / 514] x 100
Subtract the new number by the original number
86 - 514 = -428
-428 ÷ 514 = -0.8326848249027238
-0.8326848249027238 x 100 = -83.27%