-3.56% is the change from 534 to 515
Calculation steps:
[( 515 - 534 ) ÷ 534] x 100 = -3.56%
Formula
Percentage change = [(515 - 534) / 534] x 100
Subtract the new number by the original number
515 - 534 = -19
-19 ÷ 534 = -0.035580524344569285
-0.035580524344569285 x 100 = -3.56%