-41.61% is the change from 310 to 181
Calculation steps:
[( 181 - 310 ) ÷ 310] x 100 = -41.61%
Formula
Percentage change = [(181 - 310) / 310] x 100
Subtract the new number by the original number
181 - 310 = -129
-129 ÷ 310 = -0.4161290322580645
-0.4161290322580645 x 100 = -41.61%