-79.97% is the change from 674 to 135
Calculation steps:
[( 135 - 674 ) ÷ 674] x 100 = -79.97%
Formula
Percentage change = [(135 - 674) / 674] x 100
Subtract the new number by the original number
135 - 674 = -539
-539 ÷ 674 = -0.7997032640949555
-0.7997032640949555 x 100 = -79.97%