20.15% is the change from 670 to 805
Calculation steps:
[( 805 - 670 ) ÷ 670] x 100 = 20.15%
Formula
Percentage change = [(805 - 670) / 670] x 100
Subtract the new number by the original number
805 - 670 = 135
135 ÷ 670 = 0.20149253731343283
0.20149253731343283 x 100 = 20.15%