-0.86% is the change from 928 to 920
Calculation steps:
[( 920 - 928 ) ÷ 928] x 100 = -0.86%
Formula
Percentage change = [(920 - 928) / 928] x 100
Subtract the new number by the original number
920 - 928 = -8
-8 ÷ 928 = -0.008620689655172414
-0.008620689655172414 x 100 = -0.86%