-15.09% is the change from 928 to 788
Calculation steps:
[( 788 - 928 ) ÷ 928] x 100 = -15.09%
Formula
Percentage change = [(788 - 928) / 928] x 100
Subtract the new number by the original number
788 - 928 = -140
-140 ÷ 928 = -0.15086206896551724
-0.15086206896551724 x 100 = -15.09%