-39.55% is the change from 311 to 188
Calculation steps:
[( 188 - 311 ) ÷ 311] x 100 = -39.55%
Formula
Percentage change = [(188 - 311) / 311] x 100
Subtract the new number by the original number
188 - 311 = -123
-123 ÷ 311 = -0.3954983922829582
-0.3954983922829582 x 100 = -39.55%