64.66% is the change from 266 to 438
Calculation steps:
[( 438 - 266 ) ÷ 266] x 100 = 64.66%
Formula
Percentage change = [(438 - 266) / 266] x 100
Subtract the new number by the original number
438 - 266 = 172
172 ÷ 266 = 0.6466165413533834
0.6466165413533834 x 100 = 64.66%