-29.85% is the change from 784 to 550
Calculation steps:
[( 550 - 784 ) ÷ 784] x 100 = -29.85%
Formula
Percentage change = [(550 - 784) / 784] x 100
Subtract the new number by the original number
550 - 784 = -234
-234 ÷ 784 = -0.29846938775510207
-0.29846938775510207 x 100 = -29.85%