234.38% is the change from 64 to 214
Calculation steps:
[( 214 - 64 ) ÷ 64] x 100 = 234.38%
Formula
Percentage change = [(214 - 64) / 64] x 100
Subtract the new number by the original number
214 - 64 = 150
150 ÷ 64 = 2.34375
2.34375 x 100 = 234.38%
Example