208.27% is the change from 266 to 820
Calculation steps:
[( 820 - 266 ) ÷ 266] x 100 = 208.27%
Formula
Percentage change = [(820 - 266) / 266] x 100
Subtract the new number by the original number
820 - 266 = 554
554 ÷ 266 = 2.082706766917293
2.082706766917293 x 100 = 208.27%