-41.1% is the change from 511 to 301
Calculation steps:
[( 301 - 511 ) ÷ 511] x 100 = -41.1%
Formula
Percentage change = [(301 - 511) / 511] x 100
Subtract the new number by the original number
301 - 511 = -210
-210 ÷ 511 = -0.410958904109589
-0.410958904109589 x 100 = -41.1%