83.83% is the change from 266 to 489
Calculation steps:
[( 489 - 266 ) ÷ 266] x 100 = 83.83%
Formula
Percentage change = [(489 - 266) / 266] x 100
Subtract the new number by the original number
489 - 266 = 223
223 ÷ 266 = 0.8383458646616542
0.8383458646616542 x 100 = 83.83%