321.05% is the change from 171 to 720
Calculation steps:
[( 720 - 171 ) ÷ 171] x 100 = 321.05%
Formula
Percentage change = [(720 - 171) / 171] x 100
Subtract the new number by the original number
720 - 171 = 549
549 ÷ 171 = 3.210526315789474
3.210526315789474 x 100 = 321.05%