297.59% is the change from 166 to 660
Calculation steps:
[( 660 - 166 ) ÷ 166] x 100 = 297.59%
Formula
Percentage change = [(660 - 166) / 166] x 100
Subtract the new number by the original number
660 - 166 = 494
494 ÷ 166 = 2.9759036144578315
2.9759036144578315 x 100 = 297.59%