-28.52% is the change from 768 to 549
Calculation steps:
[( 549 - 768 ) ÷ 768] x 100 = -28.52%
Formula
Percentage change = [(549 - 768) / 768] x 100
Subtract the new number by the original number
549 - 768 = -219
-219 ÷ 768 = -0.28515625
-0.28515625 x 100 = -28.52%