-68.78% is the change from 647 to 202
Calculation steps:
[( 202 - 647 ) ÷ 647] x 100 = -68.78%
Formula
Percentage change = [(202 - 647) / 647] x 100
Subtract the new number by the original number
202 - 647 = -445
-445 ÷ 647 = -0.6877897990726429
-0.6877897990726429 x 100 = -68.78%