51.76% is the change from 284 to 431
Calculation steps:
[( 431 - 284 ) ÷ 284] x 100 = 51.76%
Formula
Percentage change = [(431 - 284) / 284] x 100
Subtract the new number by the original number
431 - 284 = 147
147 ÷ 284 = 0.5176056338028169
0.5176056338028169 x 100 = 51.76%