-2.51% is the change from 995 to 970
Calculation steps:
[( 970 - 995 ) ÷ 995] x 100 = -2.51%
Formula
Percentage change = [(970 - 995) / 995] x 100
Subtract the new number by the original number
970 - 995 = -25
-25 ÷ 995 = -0.02512562814070352
-0.02512562814070352 x 100 = -2.51%