-6.12% is the change from 997 to 936
Calculation steps:
[( 936 - 997 ) ÷ 997] x 100 = -6.12%
Formula
Percentage change = [(936 - 997) / 997] x 100
Subtract the new number by the original number
936 - 997 = -61
-61 ÷ 997 = -0.06118355065195587
-0.06118355065195587 x 100 = -6.12%