-14.31% is the change from 643 to 551
Calculation steps:
[( 551 - 643 ) ÷ 643] x 100 = -14.31%
Formula
Percentage change = [(551 - 643) / 643] x 100
Subtract the new number by the original number
551 - 643 = -92
-92 ÷ 643 = -0.14307931570762053
-0.14307931570762053 x 100 = -14.31%