247.59% is the change from 166 to 577
Calculation steps:
[( 577 - 166 ) ÷ 166] x 100 = 247.59%
Formula
Percentage change = [(577 - 166) / 166] x 100
Subtract the new number by the original number
577 - 166 = 411
411 ÷ 166 = 2.4759036144578315
2.4759036144578315 x 100 = 247.59%