-31.45% is the change from 989 to 678
Calculation steps:
[( 678 - 989 ) ÷ 989] x 100 = -31.45%
Formula
Percentage change = [(678 - 989) / 989] x 100
Subtract the new number by the original number
678 - 989 = -311
-311 ÷ 989 = -0.31445904954499493
-0.31445904954499493 x 100 = -31.45%