385.55% is the change from 173 to 840
Calculation steps:
[( 840 - 173 ) ÷ 173] x 100 = 385.55%
Formula
Percentage change = [(840 - 173) / 173] x 100
Subtract the new number by the original number
840 - 173 = 667
667 ÷ 173 = 3.8554913294797686
3.8554913294797686 x 100 = 385.55%