-78.9% is the change from 417 to 88
Calculation steps:
[( 88 - 417 ) ÷ 417] x 100 = -78.9%
Formula
Percentage change = [(88 - 417) / 417] x 100
Subtract the new number by the original number
88 - 417 = -329
-329 ÷ 417 = -0.7889688249400479
-0.7889688249400479 x 100 = -78.9%