-62.39% is the change from 827 to 311
Calculation steps:
[( 311 - 827 ) ÷ 827] x 100 = -62.39%
Formula
Percentage change = [(311 - 827) / 827] x 100
Subtract the new number by the original number
311 - 827 = -516
-516 ÷ 827 = -0.6239419588875453
-0.6239419588875453 x 100 = -62.39%