-21.05% is the change from 551 to 435
Calculation steps:
[( 435 - 551 ) ÷ 551] x 100 = -21.05%
Formula
Percentage change = [(435 - 551) / 551] x 100
Subtract the new number by the original number
435 - 551 = -116
-116 ÷ 551 = -0.21052631578947367
-0.21052631578947367 x 100 = -21.05%