-22.73% is the change from 308 to 238
Calculation steps:
[( 238 - 308 ) ÷ 308] x 100 = -22.73%
Formula
Percentage change = [(238 - 308) / 308] x 100
Subtract the new number by the original number
238 - 308 = -70
-70 ÷ 308 = -0.22727272727272727
-0.22727272727272727 x 100 = -22.73%