198.5% is the change from 200 to 597
Calculation steps:
[( 597 - 200 ) ÷ 200] x 100 = 198.5%
Formula
Percentage change = [(597 - 200) / 200] x 100
Subtract the new number by the original number
597 - 200 = 397
397 ÷ 200 = 1.985
1.985 x 100 = 198.5%
Example