-30.93% is the change from 611 to 422
Calculation steps:
[( 422 - 611 ) ÷ 611] x 100 = -30.93%
Formula
Percentage change = [(422 - 611) / 611] x 100
Subtract the new number by the original number
422 - 611 = -189
-189 ÷ 611 = -0.309328968903437
-0.309328968903437 x 100 = -30.93%