-84.24% is the change from 514 to 81
Calculation steps:
[( 81 - 514 ) ÷ 514] x 100 = -84.24%
Formula
Percentage change = [(81 - 514) / 514] x 100
Subtract the new number by the original number
81 - 514 = -433
-433 ÷ 514 = -0.8424124513618677
-0.8424124513618677 x 100 = -84.24%