287.86% is the change from 173 to 671
Calculation steps:
[( 671 - 173 ) ÷ 173] x 100 = 287.86%
Formula
Percentage change = [(671 - 173) / 173] x 100
Subtract the new number by the original number
671 - 173 = 498
498 ÷ 173 = 2.878612716763006
2.878612716763006 x 100 = 287.86%