18.94% is the change from 454 to 540
Calculation steps:
[( 540 - 454 ) ÷ 454] x 100 = 18.94%
Formula
Percentage change = [(540 - 454) / 454] x 100
Subtract the new number by the original number
540 - 454 = 86
86 ÷ 454 = 0.1894273127753304
0.1894273127753304 x 100 = 18.94%