-44.4% is the change from 991 to 551
Calculation steps:
[( 551 - 991 ) ÷ 991] x 100 = -44.4%
Formula
Percentage change = [(551 - 991) / 991] x 100
Subtract the new number by the original number
551 - 991 = -440
-440 ÷ 991 = -0.4439959636730575
-0.4439959636730575 x 100 = -44.4%