-15.92% is the change from 515 to 433
Calculation steps:
[( 433 - 515 ) ÷ 515] x 100 = -15.92%
Formula
Percentage change = [(433 - 515) / 515] x 100
Subtract the new number by the original number
433 - 515 = -82
-82 ÷ 515 = -0.15922330097087378
-0.15922330097087378 x 100 = -15.92%