-42.75% is the change from 538 to 308
Calculation steps:
[( 308 - 538 ) ÷ 538] x 100 = -42.75%
Formula
Percentage change = [(308 - 538) / 538] x 100
Subtract the new number by the original number
308 - 538 = -230
-230 ÷ 538 = -0.4275092936802974
-0.4275092936802974 x 100 = -42.75%