199.4% is the change from 166 to 497
Calculation steps:
[( 497 - 166 ) ÷ 166] x 100 = 199.4%
Formula
Percentage change = [(497 - 166) / 166] x 100
Subtract the new number by the original number
497 - 166 = 331
331 ÷ 166 = 1.9939759036144578
1.9939759036144578 x 100 = 199.4%