-33.49% is the change from 827 to 550
Calculation steps:
[( 550 - 827 ) ÷ 827] x 100 = -33.49%
Formula
Percentage change = [(550 - 827) / 827] x 100
Subtract the new number by the original number
550 - 827 = -277
-277 ÷ 827 = -0.3349455864570738
-0.3349455864570738 x 100 = -33.49%