-92.24% is the change from 670 to 52
Calculation steps:
[( 52 - 670 ) ÷ 670] x 100 = -92.24%
Formula
Percentage change = [(52 - 670) / 670] x 100
Subtract the new number by the original number
52 - 670 = -618
-618 ÷ 670 = -0.9223880597014925
-0.9223880597014925 x 100 = -92.24%