-89.1% is the change from 734 to 80
Calculation steps:
[( 80 - 734 ) ÷ 734] x 100 = -89.1%
Formula
Percentage change = [(80 - 734) / 734] x 100
Subtract the new number by the original number
80 - 734 = -654
-654 ÷ 734 = -0.8910081743869209
-0.8910081743869209 x 100 = -89.1%