397.42% is the change from 155 to 771
Calculation steps:
[( 771 - 155 ) ÷ 155] x 100 = 397.42%
Formula
Percentage change = [(771 - 155) / 155] x 100
Subtract the new number by the original number
771 - 155 = 616
616 ÷ 155 = 3.9741935483870967
3.9741935483870967 x 100 = 397.42%