275.3% is the change from 166 to 623
Calculation steps:
[( 623 - 166 ) ÷ 166] x 100 = 275.3%
Formula
Percentage change = [(623 - 166) / 166] x 100
Subtract the new number by the original number
623 - 166 = 457
457 ÷ 166 = 2.753012048192771
2.753012048192771 x 100 = 275.3%