-40.88% is the change from 318 to 188
Calculation steps:
[( 188 - 318 ) ÷ 318] x 100 = -40.88%
Formula
Percentage change = [(188 - 318) / 318] x 100
Subtract the new number by the original number
188 - 318 = -130
-130 ÷ 318 = -0.4088050314465409
-0.4088050314465409 x 100 = -40.88%