288.55% is the change from 166 to 645
Calculation steps:
[( 645 - 166 ) ÷ 166] x 100 = 288.55%
Formula
Percentage change = [(645 - 166) / 166] x 100
Subtract the new number by the original number
645 - 166 = 479
479 ÷ 166 = 2.8855421686746987
2.8855421686746987 x 100 = 288.55%