145.71% is the change from 280 to 688
Calculation steps:
[( 688 - 280 ) ÷ 280] x 100 = 145.71%
Formula
Percentage change = [(688 - 280) / 280] x 100
Subtract the new number by the original number
688 - 280 = 408
408 ÷ 280 = 1.457142857142857
1.457142857142857 x 100 = 145.71%