-66.27% is the change from 996 to 336
Calculation steps:
[( 336 - 996 ) ÷ 996] x 100 = -66.27%
Formula
Percentage change = [(336 - 996) / 996] x 100
Subtract the new number by the original number
336 - 996 = -660
-660 ÷ 996 = -0.6626506024096386
-0.6626506024096386 x 100 = -66.27%