-0.33% is the change from 920 to 917
Calculation steps:
[( 917 - 920 ) ÷ 920] x 100 = -0.33%
Formula
Percentage change = [(917 - 920) / 920] x 100
Subtract the new number by the original number
917 - 920 = -3
-3 ÷ 920 = -0.003260869565217391
-0.003260869565217391 x 100 = -0.33%