-50% is the change from 404 to 202
Calculation steps:
[( 202 - 404 ) ÷ 404] x 100 = -50%
Formula
Percentage change = [(202 - 404) / 404] x 100
Subtract the new number by the original number
202 - 404 = -202
-202 ÷ 404 = -0.5
-0.5 x 100 = -50%
Example