283.93% is the change from 168 to 645
Calculation steps:
[( 645 - 168 ) ÷ 168] x 100 = 283.93%
Formula
Percentage change = [(645 - 168) / 168] x 100
Subtract the new number by the original number
645 - 168 = 477
477 ÷ 168 = 2.8392857142857144
2.8392857142857144 x 100 = 283.93%