-1.6% is the change from 935 to 920
Calculation steps:
[( 920 - 935 ) ÷ 935] x 100 = -1.6%
Formula
Percentage change = [(920 - 935) / 935] x 100
Subtract the new number by the original number
920 - 935 = -15
-15 ÷ 935 = -0.016042780748663103
-0.016042780748663103 x 100 = -1.6%