440.63% is the change from 64 to 346
Calculation steps:
[( 346 - 64 ) ÷ 64] x 100 = 440.63%
Formula
Percentage change = [(346 - 64) / 64] x 100
Subtract the new number by the original number
346 - 64 = 282
282 ÷ 64 = 4.40625
4.40625 x 100 = 440.63%
Example