-80.98% is the change from 673 to 128
Calculation steps:
[( 128 - 673 ) ÷ 673] x 100 = -80.98%
Formula
Percentage change = [(128 - 673) / 673] x 100
Subtract the new number by the original number
128 - 673 = -545
-545 ÷ 673 = -0.8098068350668648
-0.8098068350668648 x 100 = -80.98%