-62.59% is the change from 866 to 324
Calculation steps:
[( 324 - 866 ) ÷ 866] x 100 = -62.59%
Formula
Percentage change = [(324 - 866) / 866] x 100
Subtract the new number by the original number
324 - 866 = -542
-542 ÷ 866 = -0.625866050808314
-0.625866050808314 x 100 = -62.59%