-15.95% is the change from 928 to 780
Calculation steps:
[( 780 - 928 ) ÷ 928] x 100 = -15.95%
Formula
Percentage change = [(780 - 928) / 928] x 100
Subtract the new number by the original number
780 - 928 = -148
-148 ÷ 928 = -0.15948275862068967
-0.15948275862068967 x 100 = -15.95%