-42.12% is the change from 311 to 180
Calculation steps:
[( 180 - 311 ) ÷ 311] x 100 = -42.12%
Formula
Percentage change = [(180 - 311) / 311] x 100
Subtract the new number by the original number
180 - 311 = -131
-131 ÷ 311 = -0.4212218649517685
-0.4212218649517685 x 100 = -42.12%