-76.67% is the change from 643 to 150
Calculation steps:
[( 150 - 643 ) ÷ 643] x 100 = -76.67%
Formula
Percentage change = [(150 - 643) / 643] x 100
Subtract the new number by the original number
150 - 643 = -493
-493 ÷ 643 = -0.7667185069984448
-0.7667185069984448 x 100 = -76.67%