86.8% is the change from 303 to 566
Calculation steps:
[( 566 - 303 ) ÷ 303] x 100 = 86.8%
Formula
Percentage change = [(566 - 303) / 303] x 100
Subtract the new number by the original number
566 - 303 = 263
263 ÷ 303 = 0.8679867986798679
0.8679867986798679 x 100 = 86.8%