-16.77% is the change from 805 to 670
Calculation steps:
[( 670 - 805 ) ÷ 805] x 100 = -16.77%
Formula
Percentage change = [(670 - 805) / 805] x 100
Subtract the new number by the original number
670 - 805 = -135
-135 ÷ 805 = -0.16770186335403728
-0.16770186335403728 x 100 = -16.77%