-70.53% is the change from 811 to 239
Calculation steps:
[( 239 - 811 ) ÷ 811] x 100 = -70.53%
Formula
Percentage change = [(239 - 811) / 811] x 100
Subtract the new number by the original number
239 - 811 = -572
-572 ÷ 811 = -0.7053020961775586
-0.7053020961775586 x 100 = -70.53%