-26.12% is the change from 670 to 495
Calculation steps:
[( 495 - 670 ) ÷ 670] x 100 = -26.12%
Formula
Percentage change = [(495 - 670) / 670] x 100
Subtract the new number by the original number
495 - 670 = -175
-175 ÷ 670 = -0.26119402985074625
-0.26119402985074625 x 100 = -26.12%