-32.06% is the change from 945 to 642
Calculation steps:
[( 642 - 945 ) ÷ 945] x 100 = -32.06%
Formula
Percentage change = [(642 - 945) / 945] x 100
Subtract the new number by the original number
642 - 945 = -303
-303 ÷ 945 = -0.32063492063492066
-0.32063492063492066 x 100 = -32.06%