-71.7% is the change from 827 to 234
Calculation steps:
[( 234 - 827 ) ÷ 827] x 100 = -71.7%
Formula
Percentage change = [(234 - 827) / 827] x 100
Subtract the new number by the original number
234 - 827 = -593
-593 ÷ 827 = -0.717049576783555
-0.717049576783555 x 100 = -71.7%