-30.11% is the change from 930 to 650
Calculation steps:
[( 650 - 930 ) ÷ 930] x 100 = -30.11%
Formula
Percentage change = [(650 - 930) / 930] x 100
Subtract the new number by the original number
650 - 930 = -280
-280 ÷ 930 = -0.3010752688172043
-0.3010752688172043 x 100 = -30.11%