51.24% is the change from 283 to 428
Calculation steps:
[( 428 - 283 ) ÷ 283] x 100 = 51.24%
Formula
Percentage change = [(428 - 283) / 283] x 100
Subtract the new number by the original number
428 - 283 = 145
145 ÷ 283 = 0.5123674911660777
0.5123674911660777 x 100 = 51.24%