341.78% is the change from 146 to 645
Calculation steps:
[( 645 - 146 ) ÷ 146] x 100 = 341.78%
Formula
Percentage change = [(645 - 146) / 146] x 100
Subtract the new number by the original number
645 - 146 = 499
499 ÷ 146 = 3.4178082191780823
3.4178082191780823 x 100 = 341.78%