-6.15% is the change from 65 to 61
Calculation steps:
[( 61 - 65 ) ÷ 65] x 100 = -6.15%
Formula
Percentage change = [(61 - 65) / 65] x 100
Subtract the new number by the original number
61 - 65 = -4
-4 ÷ 65 = -0.06153846153846154
-0.06153846153846154 x 100 = -6.15%