-16.95% is the change from 997 to 828
Calculation steps:
[( 828 - 997 ) ÷ 997] x 100 = -16.95%
Formula
Percentage change = [(828 - 997) / 997] x 100
Subtract the new number by the original number
828 - 997 = -169
-169 ÷ 997 = -0.16950852557673018
-0.16950852557673018 x 100 = -16.95%