-92.09% is the change from 670 to 53
Calculation steps:
[( 53 - 670 ) ÷ 670] x 100 = -92.09%
Formula
Percentage change = [(53 - 670) / 670] x 100
Subtract the new number by the original number
53 - 670 = -617
-617 ÷ 670 = -0.9208955223880597
-0.9208955223880597 x 100 = -92.09%