-91.51% is the change from 930 to 79
Calculation steps:
[( 79 - 930 ) ÷ 930] x 100 = -91.51%
Formula
Percentage change = [(79 - 930) / 930] x 100
Subtract the new number by the original number
79 - 930 = -851
-851 ÷ 930 = -0.9150537634408602
-0.9150537634408602 x 100 = -91.51%