55% is the change from 180 to 279
Calculation steps:
[( 279 - 180 ) ÷ 180] x 100 = 55%
Formula
Percentage change = [(279 - 180) / 180] x 100
Subtract the new number by the original number
279 - 180 = 99
99 ÷ 180 = 0.55
0.55 x 100 = 55%
Example