-32.1% is the change from 997 to 677
Calculation steps:
[( 677 - 997 ) ÷ 997] x 100 = -32.1%
Formula
Percentage change = [(677 - 997) / 997] x 100
Subtract the new number by the original number
677 - 997 = -320
-320 ÷ 997 = -0.320962888665998
-0.320962888665998 x 100 = -32.1%