-78.45% is the change from 673 to 145
Calculation steps:
[( 145 - 673 ) ÷ 673] x 100 = -78.45%
Formula
Percentage change = [(145 - 673) / 673] x 100
Subtract the new number by the original number
145 - 673 = -528
-528 ÷ 673 = -0.7845468053491828
-0.7845468053491828 x 100 = -78.45%