-30.23% is the change from 612 to 427
Calculation steps:
[( 427 - 612 ) ÷ 612] x 100 = -30.23%
Formula
Percentage change = [(427 - 612) / 612] x 100
Subtract the new number by the original number
427 - 612 = -185
-185 ÷ 612 = -0.3022875816993464
-0.3022875816993464 x 100 = -30.23%