-49.75% is the change from 203 to 102
Calculation steps:
[( 102 - 203 ) ÷ 203] x 100 = -49.75%
Formula
Percentage change = [(102 - 203) / 203] x 100
Subtract the new number by the original number
102 - 203 = -101
-101 ÷ 203 = -0.4975369458128079
-0.4975369458128079 x 100 = -49.75%