18.64% is the change from 236 to 280
Calculation steps:
[( 280 - 236 ) ÷ 236] x 100 = 18.64%
Formula
Percentage change = [(280 - 236) / 236] x 100
Subtract the new number by the original number
280 - 236 = 44
44 ÷ 236 = 0.1864406779661017
0.1864406779661017 x 100 = 18.64%