-67.64% is the change from 961 to 311
Calculation steps:
[( 311 - 961 ) ÷ 961] x 100 = -67.64%
Formula
Percentage change = [(311 - 961) / 961] x 100
Subtract the new number by the original number
311 - 961 = -650
-650 ÷ 961 = -0.676378772112383
-0.676378772112383 x 100 = -67.64%