-6.12% is the change from 981 to 921
Calculation steps:
[( 921 - 981 ) ÷ 981] x 100 = -6.12%
Formula
Percentage change = [(921 - 981) / 981] x 100
Subtract the new number by the original number
921 - 981 = -60
-60 ÷ 981 = -0.06116207951070336
-0.06116207951070336 x 100 = -6.12%