1670.97% is the change from 31 to 549
Calculation steps:
[( 549 - 31 ) ÷ 31] x 100 = 1670.97%
Formula
Percentage change = [(549 - 31) / 31] x 100
Subtract the new number by the original number
549 - 31 = 518
518 ÷ 31 = 16.70967741935484
16.70967741935484 x 100 = 1670.97%