-64.95% is the change from 910 to 319
Calculation steps:
[( 319 - 910 ) ÷ 910] x 100 = -64.95%
Formula
Percentage change = [(319 - 910) / 910] x 100
Subtract the new number by the original number
319 - 910 = -591
-591 ÷ 910 = -0.6494505494505495
-0.6494505494505495 x 100 = -64.95%