8.57% is the change from 245 to 266
Calculation steps:
[( 266 - 245 ) ÷ 245] x 100 = 8.57%
Formula
Percentage change = [(266 - 245) / 245] x 100
Subtract the new number by the original number
266 - 245 = 21
21 ÷ 245 = 0.08571428571428572
0.08571428571428572 x 100 = 8.57%