-34.2% is the change from 807 to 531
Calculation steps:
[( 531 - 807 ) ÷ 807] x 100 = -34.2%
Formula
Percentage change = [(531 - 807) / 807] x 100
Subtract the new number by the original number
531 - 807 = -276
-276 ÷ 807 = -0.3420074349442379
-0.3420074349442379 x 100 = -34.2%