-93.28% is the change from 670 to 45
Calculation steps:
[( 45 - 670 ) ÷ 670] x 100 = -93.28%
Formula
Percentage change = [(45 - 670) / 670] x 100
Subtract the new number by the original number
45 - 670 = -625
-625 ÷ 670 = -0.9328358208955224
-0.9328358208955224 x 100 = -93.28%