52.86% is the change from 280 to 428
Calculation steps:
[( 428 - 280 ) ÷ 280] x 100 = 52.86%
Formula
Percentage change = [(428 - 280) / 280] x 100
Subtract the new number by the original number
428 - 280 = 148
148 ÷ 280 = 0.5285714285714286
0.5285714285714286 x 100 = 52.86%