-31.85% is the change from 807 to 550
Calculation steps:
[( 550 - 807 ) ÷ 807] x 100 = -31.85%
Formula
Percentage change = [(550 - 807) / 807] x 100
Subtract the new number by the original number
550 - 807 = -257
-257 ÷ 807 = -0.3184634448574969
-0.3184634448574969 x 100 = -31.85%