-24.24% is the change from 330 to 250
Calculation steps:
[( 250 - 330 ) ÷ 330] x 100 = -24.24%
Formula
Percentage change = [(250 - 330) / 330] x 100
Subtract the new number by the original number
250 - 330 = -80
-80 ÷ 330 = -0.24242424242424243
-0.24242424242424243 x 100 = -24.24%