-31.11% is the change from 225 to 155
Calculation steps:
[( 155 - 225 ) ÷ 225] x 100 = -31.11%
Formula
Percentage change = [(155 - 225) / 225] x 100
Subtract the new number by the original number
155 - 225 = -70
-70 ÷ 225 = -0.3111111111111111
-0.3111111111111111 x 100 = -31.11%