-81.49% is the change from 551 to 102
Calculation steps:
[( 102 - 551 ) ÷ 551] x 100 = -81.49%
Formula
Percentage change = [(102 - 551) / 551] x 100
Subtract the new number by the original number
102 - 551 = -449
-449 ÷ 551 = -0.8148820326678766
-0.8148820326678766 x 100 = -81.49%