21.94% is the change from 661 to 806
Calculation steps:
[( 806 - 661 ) ÷ 661] x 100 = 21.94%
Formula
Percentage change = [(806 - 661) / 661] x 100
Subtract the new number by the original number
806 - 661 = 145
145 ÷ 661 = 0.21936459909228442
0.21936459909228442 x 100 = 21.94%