-33.3% is the change from 913 to 609
Calculation steps:
[( 609 - 913 ) ÷ 913] x 100 = -33.3%
Formula
Percentage change = [(609 - 913) / 913] x 100
Subtract the new number by the original number
609 - 913 = -304
-304 ÷ 913 = -0.3329682365826944
-0.3329682365826944 x 100 = -33.3%