-34.29% is the change from 945 to 621
Calculation steps:
[( 621 - 945 ) ÷ 945] x 100 = -34.29%
Formula
Percentage change = [(621 - 945) / 945] x 100
Subtract the new number by the original number
621 - 945 = -324
-324 ÷ 945 = -0.34285714285714286
-0.34285714285714286 x 100 = -34.29%