-34.8% is the change from 997 to 650
Calculation steps:
[( 650 - 997 ) ÷ 997] x 100 = -34.8%
Formula
Percentage change = [(650 - 997) / 997] x 100
Subtract the new number by the original number
650 - 997 = -347
-347 ÷ 997 = -0.34804413239719156
-0.34804413239719156 x 100 = -34.8%