287.35% is the change from 166 to 643
Calculation steps:
[( 643 - 166 ) ÷ 166] x 100 = 287.35%
Formula
Percentage change = [(643 - 166) / 166] x 100
Subtract the new number by the original number
643 - 166 = 477
477 ÷ 166 = 2.8734939759036147
2.8734939759036147 x 100 = 287.35%