70.3% is the change from 266 to 453
Calculation steps:
[( 453 - 266 ) ÷ 266] x 100 = 70.3%
Formula
Percentage change = [(453 - 266) / 266] x 100
Subtract the new number by the original number
453 - 266 = 187
187 ÷ 266 = 0.7030075187969925
0.7030075187969925 x 100 = 70.3%