309.38% is the change from 64 to 262
Calculation steps:
[( 262 - 64 ) ÷ 64] x 100 = 309.38%
Formula
Percentage change = [(262 - 64) / 64] x 100
Subtract the new number by the original number
262 - 64 = 198
198 ÷ 64 = 3.09375
3.09375 x 100 = 309.38%
Example