-89.84% is the change from 768 to 78
Calculation steps:
[( 78 - 768 ) ÷ 768] x 100 = -89.84%
Formula
Percentage change = [(78 - 768) / 768] x 100
Subtract the new number by the original number
78 - 768 = -690
-690 ÷ 768 = -0.8984375
-0.8984375 x 100 = -89.84%