-62.5% is the change from 600 to 225
Calculation steps:
[( 225 - 600 ) ÷ 600] x 100 = -62.5%
Formula
Percentage change = [(225 - 600) / 600] x 100
Subtract the new number by the original number
225 - 600 = -375
-375 ÷ 600 = -0.625
-0.625 x 100 = -62.5%