211.28% is the change from 266 to 828
Calculation steps:
[( 828 - 266 ) ÷ 266] x 100 = 211.28%
Formula
Percentage change = [(828 - 266) / 266] x 100
Subtract the new number by the original number
828 - 266 = 562
562 ÷ 266 = 2.112781954887218
2.112781954887218 x 100 = 211.28%