-15.1% is the change from 649 to 551
Calculation steps:
[( 551 - 649 ) ÷ 649] x 100 = -15.1%
Formula
Percentage change = [(551 - 649) / 649] x 100
Subtract the new number by the original number
551 - 649 = -98
-98 ÷ 649 = -0.1510015408320493
-0.1510015408320493 x 100 = -15.1%