-5.22% is the change from 997 to 945
Calculation steps:
[( 945 - 997 ) ÷ 997] x 100 = -5.22%
Formula
Percentage change = [(945 - 997) / 997] x 100
Subtract the new number by the original number
945 - 997 = -52
-52 ÷ 997 = -0.05215646940822467
-0.05215646940822467 x 100 = -5.22%