87.85% is the change from 181 to 340
Calculation steps:
[( 340 - 181 ) ÷ 181] x 100 = 87.85%
Formula
Percentage change = [(340 - 181) / 181] x 100
Subtract the new number by the original number
340 - 181 = 159
159 ÷ 181 = 0.8784530386740331
0.8784530386740331 x 100 = 87.85%