-40.94% is the change from 513 to 303
Calculation steps:
[( 303 - 513 ) ÷ 513] x 100 = -40.94%
Formula
Percentage change = [(303 - 513) / 513] x 100
Subtract the new number by the original number
303 - 513 = -210
-210 ÷ 513 = -0.4093567251461988
-0.4093567251461988 x 100 = -40.94%