-53.28% is the change from 670 to 313
Calculation steps:
[( 313 - 670 ) ÷ 670] x 100 = -53.28%
Formula
Percentage change = [(313 - 670) / 670] x 100
Subtract the new number by the original number
313 - 670 = -357
-357 ÷ 670 = -0.5328358208955224
-0.5328358208955224 x 100 = -53.28%