-76.8% is the change from 181 to 42
Calculation steps:
[( 42 - 181 ) ÷ 181] x 100 = -76.8%
Formula
Percentage change = [(42 - 181) / 181] x 100
Subtract the new number by the original number
42 - 181 = -139
-139 ÷ 181 = -0.7679558011049724
-0.7679558011049724 x 100 = -76.8%