-6.88% is the change from 989 to 921
Calculation steps:
[( 921 - 989 ) ÷ 989] x 100 = -6.88%
Formula
Percentage change = [(921 - 989) / 989] x 100
Subtract the new number by the original number
921 - 989 = -68
-68 ÷ 989 = -0.06875631951466127
-0.06875631951466127 x 100 = -6.88%