-83.85% is the change from 514 to 83
Calculation steps:
[( 83 - 514 ) ÷ 514] x 100 = -83.85%
Formula
Percentage change = [(83 - 514) / 514] x 100
Subtract the new number by the original number
83 - 514 = -431
-431 ÷ 514 = -0.8385214007782101
-0.8385214007782101 x 100 = -83.85%