21.05% is the change from 665 to 805
Calculation steps:
[( 805 - 665 ) ÷ 665] x 100 = 21.05%
Formula
Percentage change = [(805 - 665) / 665] x 100
Subtract the new number by the original number
805 - 665 = 140
140 ÷ 665 = 0.21052631578947367
0.21052631578947367 x 100 = 21.05%