53.57% is the change from 280 to 430
Calculation steps:
[( 430 - 280 ) ÷ 280] x 100 = 53.57%
Formula
Percentage change = [(430 - 280) / 280] x 100
Subtract the new number by the original number
430 - 280 = 150
150 ÷ 280 = 0.5357142857142857
0.5357142857142857 x 100 = 53.57%