91.23% is the change from 285 to 545
Calculation steps:
[( 545 - 285 ) ÷ 285] x 100 = 91.23%
Formula
Percentage change = [(545 - 285) / 285] x 100
Subtract the new number by the original number
545 - 285 = 260
260 ÷ 285 = 0.9122807017543859
0.9122807017543859 x 100 = 91.23%