210.53% is the change from 266 to 826
Calculation steps:
[( 826 - 266 ) ÷ 266] x 100 = 210.53%
Formula
Percentage change = [(826 - 266) / 266] x 100
Subtract the new number by the original number
826 - 266 = 560
560 ÷ 266 = 2.1052631578947367
2.1052631578947367 x 100 = 210.53%