-18.43% is the change from 993 to 810
Calculation steps:
[( 810 - 993 ) ÷ 993] x 100 = -18.43%
Formula
Percentage change = [(810 - 993) / 993] x 100
Subtract the new number by the original number
810 - 993 = -183
-183 ÷ 993 = -0.18429003021148035
-0.18429003021148035 x 100 = -18.43%