-76.32% is the change from 646 to 153
Calculation steps:
[( 153 - 646 ) ÷ 646] x 100 = -76.32%
Formula
Percentage change = [(153 - 646) / 646] x 100
Subtract the new number by the original number
153 - 646 = -493
-493 ÷ 646 = -0.7631578947368421
-0.7631578947368421 x 100 = -76.32%