88.89% is the change from 180 to 340
Calculation steps:
[( 340 - 180 ) ÷ 180] x 100 = 88.89%
Formula
Percentage change = [(340 - 180) / 180] x 100
Subtract the new number by the original number
340 - 180 = 160
160 ÷ 180 = 0.8888888888888888
0.8888888888888888 x 100 = 88.89%