-48% is the change from 425 to 221
Calculation steps:
[( 221 - 425 ) ÷ 425] x 100 = -48%
Formula
Percentage change = [(221 - 425) / 425] x 100
Subtract the new number by the original number
221 - 425 = -204
-204 ÷ 425 = -0.48
-0.48 x 100 = -48%
Example