-3.63% is the change from 993 to 957
Calculation steps:
[( 957 - 993 ) ÷ 993] x 100 = -3.63%
Formula
Percentage change = [(957 - 993) / 993] x 100
Subtract the new number by the original number
957 - 993 = -36
-36 ÷ 993 = -0.03625377643504532
-0.03625377643504532 x 100 = -3.63%