-93.33% is the change from 989 to 66
Calculation steps:
[( 66 - 989 ) ÷ 989] x 100 = -93.33%
Formula
Percentage change = [(66 - 989) / 989] x 100
Subtract the new number by the original number
66 - 989 = -923
-923 ÷ 989 = -0.9332659251769464
-0.9332659251769464 x 100 = -93.33%