-23.59% is the change from 551 to 421
Calculation steps:
[( 421 - 551 ) ÷ 551] x 100 = -23.59%
Formula
Percentage change = [(421 - 551) / 551] x 100
Subtract the new number by the original number
421 - 551 = -130
-130 ÷ 551 = -0.23593466424682397
-0.23593466424682397 x 100 = -23.59%