-75.24% is the change from 820 to 203
Calculation steps:
[( 203 - 820 ) ÷ 820] x 100 = -75.24%
Formula
Percentage change = [(203 - 820) / 820] x 100
Subtract the new number by the original number
203 - 820 = -617
-617 ÷ 820 = -0.7524390243902439
-0.7524390243902439 x 100 = -75.24%