-59.89% is the change from 551 to 221
Calculation steps:
[( 221 - 551 ) ÷ 551] x 100 = -59.89%
Formula
Percentage change = [(221 - 551) / 551] x 100
Subtract the new number by the original number
221 - 551 = -330
-330 ÷ 551 = -0.5989110707803993
-0.5989110707803993 x 100 = -59.89%