-9.21% is the change from 945 to 858
Calculation steps:
[( 858 - 945 ) ÷ 945] x 100 = -9.21%
Formula
Percentage change = [(858 - 945) / 945] x 100
Subtract the new number by the original number
858 - 945 = -87
-87 ÷ 945 = -0.09206349206349207
-0.09206349206349207 x 100 = -9.21%