-49.25% is the change from 400 to 203
Calculation steps:
[( 203 - 400 ) ÷ 400] x 100 = -49.25%
Formula
Percentage change = [(203 - 400) / 400] x 100
Subtract the new number by the original number
203 - 400 = -197
-197 ÷ 400 = -0.4925
-0.4925 x 100 = -49.25%