20.66% is the change from 663 to 800
Calculation steps:
[( 800 - 663 ) ÷ 663] x 100 = 20.66%
Formula
Percentage change = [(800 - 663) / 663] x 100
Subtract the new number by the original number
800 - 663 = 137
137 ÷ 663 = 0.2066365007541478
0.2066365007541478 x 100 = 20.66%