-1.07% is the change from 657 to 650
Calculation steps:
[( 650 - 657 ) ÷ 657] x 100 = -1.07%
Formula
Percentage change = [(650 - 657) / 657] x 100
Subtract the new number by the original number
650 - 657 = -7
-7 ÷ 657 = -0.0106544901065449
-0.0106544901065449 x 100 = -1.07%