-41.99% is the change from 312 to 181
Calculation steps:
[( 181 - 312 ) ÷ 312] x 100 = -41.99%
Formula
Percentage change = [(181 - 312) / 312] x 100
Subtract the new number by the original number
181 - 312 = -131
-131 ÷ 312 = -0.4198717948717949
-0.4198717948717949 x 100 = -41.99%