-75.78% is the change from 673 to 163
Calculation steps:
[( 163 - 673 ) ÷ 673] x 100 = -75.78%
Formula
Percentage change = [(163 - 673) / 673] x 100
Subtract the new number by the original number
163 - 673 = -510
-510 ÷ 673 = -0.7578008915304606
-0.7578008915304606 x 100 = -75.78%