-5.02% is the change from 997 to 947
Calculation steps:
[( 947 - 997 ) ÷ 997] x 100 = -5.02%
Formula
Percentage change = [(947 - 997) / 997] x 100
Subtract the new number by the original number
947 - 997 = -50
-50 ÷ 997 = -0.05015045135406219
-0.05015045135406219 x 100 = -5.02%