-21.62% is the change from 407 to 319
Calculation steps:
[( 319 - 407 ) ÷ 407] x 100 = -21.62%
Formula
Percentage change = [(319 - 407) / 407] x 100
Subtract the new number by the original number
319 - 407 = -88
-88 ÷ 407 = -0.21621621621621623
-0.21621621621621623 x 100 = -21.62%