-28.2% is the change from 766 to 550
Calculation steps:
[( 550 - 766 ) ÷ 766] x 100 = -28.2%
Formula
Percentage change = [(550 - 766) / 766] x 100
Subtract the new number by the original number
550 - 766 = -216
-216 ÷ 766 = -0.2819843342036554
-0.2819843342036554 x 100 = -28.2%