-25.86% is the change from 928 to 688
Calculation steps:
[( 688 - 928 ) ÷ 928] x 100 = -25.86%
Formula
Percentage change = [(688 - 928) / 928] x 100
Subtract the new number by the original number
688 - 928 = -240
-240 ÷ 928 = -0.25862068965517243
-0.25862068965517243 x 100 = -25.86%