-62.8% is the change from 836 to 311
Calculation steps:
[( 311 - 836 ) ÷ 836] x 100 = -62.8%
Formula
Percentage change = [(311 - 836) / 836] x 100
Subtract the new number by the original number
311 - 836 = -525
-525 ÷ 836 = -0.6279904306220095
-0.6279904306220095 x 100 = -62.8%