-64.66% is the change from 999 to 353
Calculation steps:
[( 353 - 999 ) ÷ 999] x 100 = -64.66%
Formula
Percentage change = [(353 - 999) / 999] x 100
Subtract the new number by the original number
353 - 999 = -646
-646 ÷ 999 = -0.6466466466466466
-0.6466466466466466 x 100 = -64.66%