126.43% is the change from 280 to 634
Calculation steps:
[( 634 - 280 ) ÷ 280] x 100 = 126.43%
Formula
Percentage change = [(634 - 280) / 280] x 100
Subtract the new number by the original number
634 - 280 = 354
354 ÷ 280 = 1.2642857142857142
1.2642857142857142 x 100 = 126.43%