398.55% is the change from 138 to 688
Calculation steps:
[( 688 - 138 ) ÷ 138] x 100 = 398.55%
Formula
Percentage change = [(688 - 138) / 138] x 100
Subtract the new number by the original number
688 - 138 = 550
550 ÷ 138 = 3.9855072463768115
3.9855072463768115 x 100 = 398.55%