340.63% is the change from 64 to 282
Calculation steps:
[( 282 - 64 ) ÷ 64] x 100 = 340.63%
Formula
Percentage change = [(282 - 64) / 64] x 100
Subtract the new number by the original number
282 - 64 = 218
218 ÷ 64 = 3.40625
3.40625 x 100 = 340.63%
Example