-49.12% is the change from 397 to 202
Calculation steps:
[( 202 - 397 ) ÷ 397] x 100 = -49.12%
Formula
Percentage change = [(202 - 397) / 397] x 100
Subtract the new number by the original number
202 - 397 = -195
-195 ÷ 397 = -0.491183879093199
-0.491183879093199 x 100 = -49.12%