20.8% is the change from 553 to 668
Calculation steps:
[( 668 - 553 ) ÷ 553] x 100 = 20.8%
Formula
Percentage change = [(668 - 553) / 553] x 100
Subtract the new number by the original number
668 - 553 = 115
115 ÷ 553 = 0.20795660036166366
0.20795660036166366 x 100 = 20.8%