-69.43% is the change from 831 to 254
Calculation steps:
[( 254 - 831 ) ÷ 831] x 100 = -69.43%
Formula
Percentage change = [(254 - 831) / 831] x 100
Subtract the new number by the original number
254 - 831 = -577
-577 ÷ 831 = -0.694344163658243
-0.694344163658243 x 100 = -69.43%