449.02% is the change from 51 to 280
Calculation steps:
[( 280 - 51 ) ÷ 51] x 100 = 449.02%
Formula
Percentage change = [(280 - 51) / 51] x 100
Subtract the new number by the original number
280 - 51 = 229
229 ÷ 51 = 4.490196078431373
4.490196078431373 x 100 = 449.02%