-78.77% is the change from 551 to 117
Calculation steps:
[( 117 - 551 ) ÷ 551] x 100 = -78.77%
Formula
Percentage change = [(117 - 551) / 551] x 100
Subtract the new number by the original number
117 - 551 = -434
-434 ÷ 551 = -0.7876588021778584
-0.7876588021778584 x 100 = -78.77%