-50.41% is the change from 611 to 303
Calculation steps:
[( 303 - 611 ) ÷ 611] x 100 = -50.41%
Formula
Percentage change = [(303 - 611) / 611] x 100
Subtract the new number by the original number
303 - 611 = -308
-308 ÷ 611 = -0.5040916530278232
-0.5040916530278232 x 100 = -50.41%