137.26% is the change from 212 to 503
Calculation steps:
[( 503 - 212 ) ÷ 212] x 100 = 137.26%
Formula
Percentage change = [(503 - 212) / 212] x 100
Subtract the new number by the original number
503 - 212 = 291
291 ÷ 212 = 1.3726415094339623
1.3726415094339623 x 100 = 137.26%