-69.71% is the change from 515 to 156
Calculation steps:
[( 156 - 515 ) ÷ 515] x 100 = -69.71%
Formula
Percentage change = [(156 - 515) / 515] x 100
Subtract the new number by the original number
156 - 515 = -359
-359 ÷ 515 = -0.6970873786407767
-0.6970873786407767 x 100 = -69.71%