343.15% is the change from 146 to 647
Calculation steps:
[( 647 - 146 ) ÷ 146] x 100 = 343.15%
Formula
Percentage change = [(647 - 146) / 146] x 100
Subtract the new number by the original number
647 - 146 = 501
501 ÷ 146 = 3.4315068493150687
3.4315068493150687 x 100 = 343.15%