-75.53% is the change from 809 to 198
Calculation steps:
[( 198 - 809 ) ÷ 809] x 100 = -75.53%
Formula
Percentage change = [(198 - 809) / 809] x 100
Subtract the new number by the original number
198 - 809 = -611
-611 ÷ 809 = -0.7552533992583437
-0.7552533992583437 x 100 = -75.53%