70.68% is the change from 266 to 454
Calculation steps:
[( 454 - 266 ) ÷ 266] x 100 = 70.68%
Formula
Percentage change = [(454 - 266) / 266] x 100
Subtract the new number by the original number
454 - 266 = 188
188 ÷ 266 = 0.706766917293233
0.706766917293233 x 100 = 70.68%