210.9% is the change from 266 to 827
Calculation steps:
[( 827 - 266 ) ÷ 266] x 100 = 210.9%
Formula
Percentage change = [(827 - 266) / 266] x 100
Subtract the new number by the original number
827 - 266 = 561
561 ÷ 266 = 2.1090225563909772
2.1090225563909772 x 100 = 210.9%