-32% is the change from 997 to 678
Calculation steps:
[( 678 - 997 ) ÷ 997] x 100 = -32%
Formula
Percentage change = [(678 - 997) / 997] x 100
Subtract the new number by the original number
678 - 997 = -319
-319 ÷ 997 = -0.31995987963891676
-0.31995987963891676 x 100 = -32%