248.65% is the change from 185 to 645
Calculation steps:
[( 645 - 185 ) ÷ 185] x 100 = 248.65%
Formula
Percentage change = [(645 - 185) / 185] x 100
Subtract the new number by the original number
645 - 185 = 460
460 ÷ 185 = 2.4864864864864864
2.4864864864864864 x 100 = 248.65%