269.36% is the change from 173 to 639
Calculation steps:
[( 639 - 173 ) ÷ 173] x 100 = 269.36%
Formula
Percentage change = [(639 - 173) / 173] x 100
Subtract the new number by the original number
639 - 173 = 466
466 ÷ 173 = 2.69364161849711
2.69364161849711 x 100 = 269.36%