-99.35% is the change from 921 to 6
Calculation steps:
[( 6 - 921 ) ÷ 921] x 100 = -99.35%
Formula
Percentage change = [(6 - 921) / 921] x 100
Subtract the new number by the original number
6 - 921 = -915
-915 ÷ 921 = -0.993485342019544
-0.993485342019544 x 100 = -99.35%