346.88% is the change from 64 to 286
Calculation steps:
[( 286 - 64 ) ÷ 64] x 100 = 346.88%
Formula
Percentage change = [(286 - 64) / 64] x 100
Subtract the new number by the original number
286 - 64 = 222
222 ÷ 64 = 3.46875
3.46875 x 100 = 346.88%
Example