-31.95% is the change from 748 to 509
Calculation steps:
[( 509 - 748 ) ÷ 748] x 100 = -31.95%
Formula
Percentage change = [(509 - 748) / 748] x 100
Subtract the new number by the original number
509 - 748 = -239
-239 ÷ 748 = -0.3195187165775401
-0.3195187165775401 x 100 = -31.95%