-21.54% is the change from 701 to 550
Calculation steps:
[( 550 - 701 ) ÷ 701] x 100 = -21.54%
Formula
Percentage change = [(550 - 701) / 701] x 100
Subtract the new number by the original number
550 - 701 = -151
-151 ÷ 701 = -0.21540656205420827
-0.21540656205420827 x 100 = -21.54%