-37.71% is the change from 997 to 621
Calculation steps:
[( 621 - 997 ) ÷ 997] x 100 = -37.71%
Formula
Percentage change = [(621 - 997) / 997] x 100
Subtract the new number by the original number
621 - 997 = -376
-376 ÷ 997 = -0.37713139418254765
-0.37713139418254765 x 100 = -37.71%